Process for preparation of 3,3'-or 3,4'- diaminobenzophenones

Details Process for preparation of 3,3'-or 3,4'- diaminobenzophenones Process for preparation of 3,3'-or 3,4'- diaminobenzophenones

C - Chemistry, Metallurgy

07

C

260/578.4

C07C 309/40 (2006.01)

Patent

CA 1182129

PROCESS FOR PREPARING OF 3,3'- or 3,4'-DIAMINO BENZOPHENONE ABSTRACT OF THE DISCLOSURE: 3,3'- or 3,4'-diamino benzophenone is prepared by catalytically reducing and dehalogenating, in the presence of a reduction catalyst and a dehydrohalogenation agent, a benzophenone compound or benzophenone compounds of the general formula Image in which X is a halogen atom at position 2 or 4 of the benzene ring and Y is hydrogen or a halogen atom and in which the nitro group is at position 3' or 4' of the benzene ring if Y is hydrogen, while Y is at position 4' and the nitro group is at position 3' of the benzene ring if Y is a halogen atom. - 1 -

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